<div id="social_networks_signin" class="prepend-2 span-15 last prepend-top append-bottom">
    <a href="<?php echo $twitter->getAuthenticateUrl() ?>">
        <img src="/images/sign-in-with-twitter-d.png" alt="sign in with twitter" />
    </a>
    <a href="<?php echo $fb_login_url ?>" style="margin-left: 15px">
        <img src="/images/facebook-signin-button.png" alt="Facebook Signin Button" />
    </a>
</div>
